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How to tile over shower tray?

Looking to renovate our bathroom and was looking at this tile over shower tray https://www.bunnings.com.au/wet-area-solutions-900-x-900mm-centre-outlet-shower-tile-over-tray_p0177588

After watching the installation video from wet area solutions

https://youtu.be/CAuGrwPd3Yw

it finishes off by installing tile underlay around the surrounding area to make it flush and then waterproof before laying tile, however it did not mention doing any screeding. With this shower tray, do you still have to screed the entire bathroom, including the shower tray or is it intended to tile over the pan and underlay directly? If intended to screed everything, what would the recommended bonding compound to use?

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EricL

Hello @anthonyu

Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your shower tray.

The Wet Area Solutions 900 x 900mm Centre Outlet Shower Tile Over Tray has a built-in fall to the waste. It's therefore not necessary to screed the surface of the tray. I recommend speaking to your plumber as they will be able to tell you if a screed will be necessary for the rest of your bathroom flooring. Their decision on whether a secondary bathroom waste will be necessary will dictate how you'll be building your floor.

Since you are using cement tiling sheets, a primer can be applied to the surface of the sheet. For example, the Dunlop 1L Multipurpose Water Based Primer. But I propose speaking to your waterproofing agent and finding out what products they intend to use to make sure all items are compatible.

Let me call on our experienced members @Nailbag and @Dave-1 for their recommendations.

If you need further assistance, please let us know.

Eric

anthonyu

Thanks @EricL, the bathroom currently has a central floor waste.

Dave-1

Good Evening @anthonyu

Now that was an interesting video, made sense and I like how they explained everything.

I have not installed a shower tray as yet 🙂

I am in the same mindset as @EricL in his suggestion to talk to your plumber. Making sure the waterproofing and the rest is done properly so the plumber can sign off on the waterproof certificate for you house is neccasary. For insurance and if its a new house a hand over type deal.

As far as I know there needs to be also a waste point in the floor of the wet area (not just the shower) and depending on the fall needed is where your question is. My existing bathroom does not have a fall, but then dodgy bro inc built and renovated the place 🙂 It comes back to what your plumber recomends and also what type and size of tile id say you go for.

Dave

EricL

Hello @anthonyu

Thanks for sharing that extra bit of information in regards to your bathroom waste. I suggest speaking to your plumber and tiler in regards to the best strategy to employ when screeding you're flooring. Where should it start, how far should it go. Once the details are finalized you can then begin planning on how you'll be screeding your floor.

If you need further assistance, please let us know.

Eric

anthonyu

Cheers @Dave-1 @EricL, I did some reading and it seems that a central floor waste is required in Class 1 homes if the shower is not fully enclosed, if you have a fully enclosed shower it is not required but still recommended

https://www.nhs.trade/news/post/floor-wastes-in-bathrooms-are-they-required.html

As for the floor tile, we are going for 300x300

Nailbag

Hi @anthonyu

The main bathroom floor shouldn't require any screeding unless there are areas of substantial levelling issues. Minor variances can be rectified by the tiler during laying. The floor and walls will need to be waterproofed in accordance with building codes. Essentially, 1800mm for the shower walls and 150mm for the rest of the surrounding walls with some variances depending on layout. The requirement for a floor waste drain/gully in the bathroom floor varies from state to state if the bathroom is on the ground level. Fort example both Qld and NSW it's mandatory but in Victoria it's often only recommended.

And if you haven't already considered it, installing under tile heating is a very affordable luxury, which many people don't think of at this stage of the project. I've worked on a couple of bathroom reno this year and both had these installed. I got to check one out once it was completed and the gentle heat also heated both the WIR and bedroom, which was impressive. And all timer controlled.

Nailbag

Regards Nailbag

anthonyu

Hey @Nailbag, I'm not really following your post; however, my plan is to install a curbless shower and from the regulations, it doesn't look like i need to have a screed to the central drain as long as the shower is enclosed. Considering the shower is only going to be 900x900 i will be getting glass shower screens and doors installed anyways. My plan is once I remove everything is to check if it is level or have some low spots and if required use some self levelling first.

Nailbag

Hi @anthonyu

Sorry it was me misunderstanding how the tile over tray is installed from not watching the video. I thought these say on top of the floor and the wall tiles are what tile over the side lips of the tray. I've edited my original post to cut out my misunderstanding causing the confusion.

Nailbag.

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